BaseObjectSpace.GetObjects<T>(CriteriaOperator, IList<SortProperty>, Boolean) Method

Returns a sorted IList collection of objects of the specified type, retrieved to the current Object Space and filtered according to the specified criteria.

Namespace: DevExpress.ExpressApp

Assembly: DevExpress.ExpressApp.v23.1.dll

NuGet Package: DevExpress.ExpressApp

Declaration

C#

public IList<T> GetObjects<T>(
    CriteriaOperator criteria,
    IList<SortProperty> sorting,
    bool inTransaction
)

VB.NET

Public Function GetObjects(Of T)(
    criteria As CriteriaOperator,
    sorting As IList(Of SortProperty),
    inTransaction As Boolean
) As IList(Of T)

Parameters

Name	Type	Description
criteria	CriteriaOperator	A CriteriaOperator which specifies the criteria for object selection.
sorting	IList<SortProperty>	An IList<SortProperty> object that specifies sorting.
inTransaction	Boolean	true if all objects (in the database and retrieved) are processed by the specified criteria; otherwise, false. Has effect in XPO only.

Type Parameters

Name
T

Returns

Type	Description
IList<T>	Only objects that satisfy the specified criteria will be retrieved to this collection.

Remarks

Below is an example of using the GetObjects<T> method. Here, objectSpace is the Object Space instance which can be accessed as described in the Ways to Access an Object Space (the Database Context for CRUD Operations) topic.

C#

IList activeUsers = objectSpace.GetObjects(
    typeof(PermissionPolicyUser), new BinaryOperator("IsActive", true), true);

VB.NET

Dim activeUsers As IList = objectSpace.GetObjects( _
GetType(PermissionPolicyUser), New BinaryOperator("IsActive", True), True)

When implementing the IObjectSpace interface in the BaseObjectSpace class’s descendant, don’t implement the GetObjects<T> method. It’s implemented in the BaseObjectSpace class. To get the specified objects, the BaseObjectSpace.GetObjects(Type type, CriteriaOperator criteria, bool inTransaction) method invokes a protected virtual CreateCollection method that does nothing and returns null. So, you should override the CreateCollection method in your descendant.

Implements

GetObjects<T>(CriteriaOperator, IList<SortProperty>, Boolean)